Wrench.



F. MANOUSSO.

WRENCH.

APPLICATION FILED JULY 24,1912.

Patented Feb. 2, 1915.

THE NORRIS PETERS CO.. PHoTo-LlTHOn WASHING roN 2 FRANK MANCUSSO, OF BARRELVILLE, MARYLAND.

WRENCH.

Specification of Letters Patent.

Patented Feb. 2, 1915.

Application filed July 24, 1912. Serial No. 711,258.

To all whom it may concern:

Be it known that I, FRANK MANOUSSO, a subject of the Emperor of Italy, residing at Barrelville, in the county of Allegany and State of Maryland, have invented certain new and useful Improvements in renches, of which the following is a specification.

My invention relates to wrenches of the rigid jaw type and has for its object the provision. of means by which the wrench is adapted to use with nuts of different sizes and consists of the provision of a wrench head with a socket therein in which is slid ably mounted a plurality of bars adapted to be adjusted to engage the nut or to be moved into an inoperative position as desired, the bars being of different widths to provide for fitting the wrench on nuts of different sizes.

My invention will be described in detail hereinafter and illustrated in the accompanying drawings, in which,

Figure 1 is a top plan view of my improved wrench showing it applied to a nut, with two of the bars in their outermost position, while the other bar is in its innermost position to form the jaws for the nut; Fig. 2, a longitudinal sectional view showing one of the bars partly removed from the socket; Fig. 3, a cross section on the plane indicated by the line 3-3 of Fig. 2; Figs. 4 and 5, are perspective views of the clamping block.

In the drawings similar reference characters will be used to designate corresponding parts throughout the several views.

My improved wrench comprises a head 1 having a socket 2 therein and two parallel jaws 3 extending from the two sides of said head, said jaws 3 being connected by means of bars 4: and 5 spaced apart as shown, the spaced apart portion between the bars 4: and 5 being substantially the same width as the socket 2, as clearly shown in Fig. Q.

Mounted between the jaws 3 are a plural ity of bars designated 6, 7 and 8 of different widths as shown, said bars being adapted to slide between the cross bars 4 and 5 so that they may seat in the socket 2 as shown of the bar 6 in Fig. 1, or may be moved out wardly into the position shown as to bars 7 and 8 in Fig. 1 to cooperate with one of the jaws to form the jaws of the wrench. The engaging surfaces of the bars 6, 7 and 8 adjacent to their outer terminals are milled or otherwise roughened as shown at 9 in Fig. 2 to assist in holding the nut in engagement therewith while the wrench is in operation. The inner surface of the cross bar 5 is formed with a recess 10 having its wall to ward the socket 2 formed tapered or wedgeshape as shown at 11, and mounted in said recess 10 is a clamping member 12 having a tapered portion 13 that engages the wedgeshaped portion 11 of the recess. The clamping member 12 consists of a block as shown and has sockets 14 therein in which are mounted helical springs 15 that engage the inner surface of the recess 10 and hold said block in an outwardly projected position against the bars 6, 7 and 8 to prevent accidental displacement thereof from the socket 2 and from between the jaws 3. 16 indicates a threaded pin mounted in a threaded opening 17 in the cross bar 5 that engages said clamping block 12 to hold said block in a clamping position against the bars 6, 7 and 8 when adjusted to be used as a wrench.

18 indicates a handle secured to the head 1 by means of a threaded shank 19 or in any other suitable manner.

Having thus described my invention what I claim is In a wrench, the combination with a handle, of a body portion secured thereto and having a socket formed interiorly there of, parallel jaws extending from the two sides of said body portion, cross arms spaced and secured to said parallel arms interme diate the end and at thecenter thereof, slides of different sizes slidably mounted within said cross arms between the parallel jaws and adapted to extend into said socket, the upper of said cross arms having a wedgeshaped recess formed in its under face, said recess tapering toward the socket aforesaid, a clamping member having a flat surface and a curved surface, springs mounted upon the curved surface of said clamping member near each end thereof and said clamping member being mounted in said recess and the curved surface of said clamping member registering with the curved surface of said recess, said slides adapted to coiiperate With In testimony whereof I afiix my signature the parallel jaws in the operation of clampin presence of tWo Witnesses. ing, and means for holding the clamping member into engagement-j With said slides v e FRANK MANGUSSO. 5 including a screw mounted inthe upper \Vitnesses:

cross arm and engaging said clamping mem- WiLLIAM EWALD,

ber. WILLIAM JENKINS.

Copies of this patent may be obtained for five cents'each; by addressing the Commissioner of Patents,

Washington, D. 0. 

